Receivables - Components of Finance and Contract Receivables Beyond One Year (Detail) - USD ($) $ in Millions	Jun. 29, 2019	Dec. 29, 2018
Receivables [Abstract]
Finance receivables	$ 1,130.4	$ 1,116.2
Contract receivables	351.2	348.0
Total	1,481.6	1,464.2
Allowances for doubtful accounts:
Finance receivables	(41.4)	(41.8)
Contract receivables	(3.7)	(3.1)
Total	(45.1)	(44.9)
Total long-term finance and contract receivables – net	1,436.5	1,419.3
Finance receivables – net	1,089.0	1,074.4
Contract receivables – net	$ 347.5	$ 344.9